Experts have been warning of the health risks caused by passive smoking.
A. at a time
B. at one time
C. for some time
D. for the time
Experts have been warning of the health risks caused by passive smoking.A. at a timeB. at
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解决时间 2021-03-22 12:16
- 提问者网友:锁深秋
- 2021-03-21 12:18
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- 五星知识达人网友:摆渡翁
- 2021-03-21 13:06
A. at a timeB. at one time(答案→)C. for some timeD. for the time解析:for some time 意为“一段时间”,因为谓语用了现在完成进行时,所以要用for some time,表示从过去的某个时候开始一直延续到现在的一段时间内,专家一直警告说被动吸烟引起健康危急。at a time意为“每次,在某时”;at one time意为“同时,曾经”;for the time意为“暂时”。
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- 1楼网友:毛毛
- 2021-03-21 14:22
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